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  1. ROOT
  2. ROOT-10111

X11 crash opening TCanvas on Fedora

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Blocker
    • Resolution: Clarified
    • Affects Version/s: 6.16/00
    • Fix Version/s: None
    • Component/s: Graphics
    • Labels:
      None
    • Environment:

      Fedora 30 running Wayland, with two external monitors or using the laptops own screen.

      root-6.16.00-3.fc30.x86_64

      kernel-5.0.11-300.fc30.x86_64

      glx-utils-8.4.0-3.20181118git1830dcb.fc30.x86_64

    • Development:

      Description

      Any root session crashes when it attempts to open a TCanvas. e.g.

      >root -l

      Applying ATLAS style settings...

      root [0] TCanvas * c = new TCanvas("hello","hello",800,600);
      Error in <RootX11ErrorHandler>: GLXBadContext (XID: 41943418, XREQ: 150)
      [xcb] Unknown sequence number while processing queue
      [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called
      [xcb] Aborting, sorry about that.
      root.exe: xcb_io.c:263: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed.

      This may well be the first time I ran root since upgrading to Fedora 30.

       

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            • Assignee:
              axel Axel Naumann
              Reporter:
              murray Bill Murray
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              Dates

              • Created:
                Updated:
                Resolved:
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